Process of making hinges



Sept. 4, 1923. 1,467,244

P. FRANTZ PROCESS OF MAKING HINGES Filed Dec. 5. 1921 Patented Sept. 4,1923.

ETER FRANTZ,, on STERLING, ILLINOIS, "Ass enoa 'ro f meant rnan'rz'MANUFACTURING COMPANY, or STERLING, ILLINOIS, A ooaronarron oI' LLInoIs.

reoenss or MA ING nrnens.

App1ieation filed December 5, 1921. Serial No. 520,060.

To aZZwhom it may concern:

Be it known that I, PETER FRANTZ, a citizen of the United States, andaresident of Sterling, county of Whiteside, State of 5 Illinois, haveinvented a certain new and useful Improvement in Processes of MakingHinges, of which the'following is'a specification; i

This invention relates to the manufacture of hinges for doors or forother purposes, and it relates more particularly to hinges of thatparticular form in which two plates are held together by a pintle, withpintle bearings forming a knuckle joint between 1 is provided with aspace formed to receive the other plate.

Generally stated, therefore, the object of the invention is to providean improved method of blanking out the hinge plates from sheet metal,"in a manner that not only insures against waste, but also in a mannerthat renders the hinge satisfactory in use, as will hereinafter morefully appear.

To these and other useful ends the invention consists in mattershereinafter set forth and clainiedand shown in the accompanying drawingsin whlch:

Figure 1 is a plan of a strip of sheet metal showing diagrammaticallythe method of blanking out the hinge plates by a method or processinvolving the principles of the invention. 7

Figure 2 is a plan ofan ordinary so-called T-hinge made in accordancewith the invention.

Figure 3 is a perspective of one of the the two end portions 2 of twodifferent plates. The holesfi are punched'at the same the two plates,whereby at least one plate this method, as shown, each space 5 is formedby cutting out metal "enough to form time that the plates arepunched outfrom the long strip of sheet metal, it being observed that this striptravels in'the direction indicated by-the arrow, so that the portions '2extendcrosswise or at right angles to the lengthzof said strip. ,In thisway, therefore, it will be seenthatno metal is wasted, as the 6 spaces 5in the plate are formed by cutting out enough metal to form the portions2 of said plates. v f

The platesthus formed can be combined with other plates in any suitableor desired manner, in order to form hinges of the re quired character.As shown in Figure 2, the long plate 6 is formed with a pintle bearing 7.to fit in the space 5 of the plate 1, and a pintle of anysuitablecharacter is in- 7. serted in the bearings 3 and 7 to hold the platestogether, thus forming what is ordinarily called a T -hinge.Obviously,how-

ever, the hinges formed may be of any suit able size or'style,-but inany event, and

. regardless ofthe design employed, the pintle hearing 7 is equal inlength to the combined, length of the bearings 3, so that the knuckle ofthe hinge has the metal thereof divided equally between the two plates.Thus the feature of having the combined width of the portions 2 equal tothe width of the space 5, in blanking out the plates, not only tends toinsure against unnecessary'waste in the cutting of the sheet metal, butalso en-r sures or brings; about some advantageous and desirable resultsin the use'of the hinge, as well'as in, the making of hinges ofdiiferent sizes. FVhen the combined width of the pertions 2 is equal tothe space 5, hinges'of different sizes can be made by simply using sheetmetal strips of different widths, and bycut-ting each sheet in themanner shown in Figure 1, whereby plates of different sizes will be madeor produced. 9

It will be seen that the articles formed during the blanking operationhave all their edges formed on straight lines extending at right anglesto each other so that each article is substantially rectangular exceptfor 9 the space 5 formed in one side edge thereof;

' What I claim as my invention is:

1; The process of making a 'hinge,..com-

prising the blanking and cutting of sheet metal to form plates eachhaving a space' occupied during the blanking operation by the endportions of two other plates, so that the metal cut out to form thespace of each plate is utilized to form'the end portions of otherplates, thereby to prevent waste in the cutting of the metal.

2. A process for making hinges of the kind comprising a plate havingpintle bearings spaced apart a distance equal to the combined length ofsaid bearings, so that each bearing is equal to one-half of the width ofsaid space, and another plate having a pintle bearing adapted to fit insaid space, whereby said last mentioned pintle bearing; is equal inlength to the combined length of said first mentioned pintle bearings,comprising the formation of saidfirst mentioned pintle bearings frommetal cut away to form a space between two similar bearings of anotherplate of the same size and form. thereby to prevent waste in the cuttingof the metal from which the plates of this kind are made.

.3; The process of blanking out sheet metal articles, each articlehaving two end portions spaced apart a distance equal to the combinedwidth of said end portions, comprising the formation of said endportions from the metal cut away to form the space of each plate,whereby no Waste metal occurs anywhere between the plates during theblanking 'operation.

4. A process as specified in claim 3, in which said articles are formedwith all their edges on straight lines at right angles to each other. pp

5. A process as specified in claim 3, in

which the sheet metal is in the form of a long strip having said endportions extending at right angles to the 'leng'th'thereof PETERFRAN-TZ'.

